feat(image): simplify generation and release 1.2.0

plugins/generate-agents-md/.codex-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "generate-agents-md",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "创建、更新或审查 AGENTS.md；基于仓库事实生成精炼、准确的 Agent 指南。",
   "author": {
     "name": "EAPIL",